Used REMstar Auto A-Flex

My sister was diagnosed with a rare form of breast cancer. As the disease progressed, it spread to her lung (although she never new that it had). During this we bought her a CPAP and she used it one night and eventually had to sleep with straight oxygen. She passed on Dec 26th. I put the machine away and tossed the mask, but did not know I couldn't sell it on ebay until I tried to list it and it was shut down. I am not looking to circumvent or break laws/rules, but was told to come here and let folks know I would like to sell it. The unit is a REMstar Auto A-flex System One Phillips Respironics...w/ heated humidifier. I have the case, power supply, entire unit, hose, sd card, but no masks. I have a little over $600 in it. I am sure if you are interested you know what it's worth. I will accept the first reasonable offer. D Hamilton 256-449-2529